Homebrew PCBs

> Amazingly the exposure time was about 1 min
> 
> Development a staggering 30-45 seconds
> 
> Etching about 20 mins at 20°C no bubbles just swishing the 
solution 
> over the board.
> 
> Maybe these chemicals/boards are far better than the ones I have 
> used before (it has been over 10 years). 
 

Did a search for fotoboard since I was not familar with it.  Seems 
to be a UK product and I am in the USA.  Found a site that said it 
only required a 1 min exposure time which is what you have found it 
to be.  Also said that the boards supplied to schools has a 3 min. 
exposure time and that developer was half strength also.

Even with some over exposure unles your image is not dark enough you 
should have still be getting something left but then sounded like 
you developing solution may have been too strong at first also.

Anyway sounds like you found the right combination now.  

Ben